Engine Audi CGWA

The 3.0-liter Audi CGWA 3.0 TFSI engine was assembled at the concern’s factories from 2009 to 2013 and was installed on the fourth-generation all-wheel drive modification of the A8 model before restyling. This power unit was essentially a slightly updated version of the engine under the CAJA index.

The EA837 series includes: BDW, AUK, BDX, CAJA, CGWA, CGWB, CREC.


Production years 2009-2013
Displacement, cc 2995
Fuel system direct injection
Power output, hp 290
Torque output, Nm 420
Cylinder block aluminum V6
Block head aluminum 24v
Cylinder bore, mm 84.5
Piston stroke, mm 89
Compression ratio 10.5
Features DOHC
Hydraulic lifters yes
Timing drive 4 chains
Phase regulator on the intake shafts
Turbocharging compressor
Recommended engine oil 5W-30
Engine oil capacity, liter 6.5
Fuel type petrol
Euro standards EURO 5
Fuel consumption, L/100 km (for Audi A8 2011)
— city
— highway
— combined
Engine lifespan, km ~240 000

The engine was installed on:

  • Audi A8 D4 (4H) in 2010 – 2013.

Disadvantages of the Audi CGWA engine

  • Most often, owners of A8 with such an engine complain about increased oil consumption.
  • The reason is usually scuffing from catalyst crumbs that are drawn into the cylinders.
  • Since there are no check valves for the cylinder head oil channels, the chains crack during a cold start.
  • Another culprit for the noise of the timing chains here can be the wear of the hydraulic tensioner.
  • The pump, high-pressure fuel pump have a low resource, and muffler corrugations often burn out.

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